Combined draft-regulator



llivrrnn STATES ATENT Finca,

EARL V. OOULSTON, OF ROYERS FORD, PENNSYLVANIA.

COMBINED DRAFT-REGULATOR, DAMPER, AND VENTILATOR.-

SPECIFICATION forming parl', 0f Letters Patent N O. 613,835, dated November 8, 189.8.

Application filed March 3l, 1898. Serial No. 675,859. (No model.)

To all whom, t may concern:

Be it known that l, EARL V. CoULsToN, a citizen of the United States, residing at Royers Ford, in the county of Montgomery and State of Pennsylvania, have invented a certain new and useful Improvementin a Oombined Draft-Regulator, Damper, and Ventilator, of which the following is a specification. My invention relates to a new and useful improvement in combined draft-regulators,

dampers, and ventilators for stoves, ranges, and the like, and has for its object to provide an exceedingly simple and effective device which may be applied to a stovepipe -or flue and when in place may be utilized to regulate the draft, act as a damper, and ventilate the apartment in which it is placed.

With these ends in view this invention consists in the details of construction and comi bination of elements hereinafter set forth and then specically designated by the claim.

In order that those skilled in the art to which this invention appertains may understand how to make and use the same, the construction and operation will lnow be described in detail, referring to the accompanying drawings, forming a part of this specification, in which- Figure lis a perspective of my improvement, showing it in place upon a stovepipe; Fig. 2, a similar view of one of the swinging doors; Fig. 3, a vertical section through the device, showing one of the doors swung inward to regulate the draft and admit a certain amount of the surrounding atmosphere to the flue, While the other door is in its elevated position; and Fig. 4, a horizontal section of the casing or box, showing both of the doors swung into their lowered position, thereby retarding the draft throughthe lire-bed.

In carrying ont my invention as here embodied I provide a box or casing A, which is preferably rectangular in shape, having a circular collar B projecting from the top and bottom thereof, thus adapting it for insertion between the joints of a stovepipe, C representing said pipe. Two sides of this casing are closed, while the other two sides have rectangular openings, which are normally closed by the swinging doors D, said doors being hinged by the pintles E, which project from the lower edge thereof, one of said pintles being turned upward, as indicated at F, and thus adapted for use as a handle to open and close the door. The pintles are here shown as passing through holes in the closed sides of the casing, but of course may be jonrnaled in any other suitable manner.

I prefer that the central portion of each door shall be set outward, as indicated at G, so'that when the door is in its vertical position this offset will be beyond the pintles, thereby acting as a Weight to hold the door closed, the flange of said door being larger than the opening which it is to cover, and thus serving as a stop to prevent the further outward swinging of the door.

Stops H are secured to the inside of the casing and so placed as to ,limit the down ward movement of the doors at a point where their edges will lie in close proximity to each other. in the same horizontal plane, and when the doors are in this position it is obvious that the upward flow of draft from the stove or-range will be entirely cut off; but to perlnit the escape of gas an opening I isformed in these doors by a semicircular notch or a recess in each, which when registering with each other form this gas-escape, as clearly seen in. Fig. 4, it being seen that the lugs or stops H independently support the upper or inner portions of the damper-doors, and the latter cannot drop below the center and so bind on each other on the side wall of the box or against the inner face of the stovepipe, said lugs/or stops scarcely interfering with the regular draft through the casing.

In practice most desirable results are had bythe use of my improvement, since when it is desired to reduce the force of draft passing through the fire-bed one or both of the doors may be turned down to the position shown in Figs. 3 and 4, and when so located the surrounding atmosphere will flow in, as indicated by the arrows, and to that extent reduce the draft through the nre-bed, and when these doors are both swung downward against the stops H they will act as a damper to practically cut off the draft through the lire-bed, while permitting the escape of the gas, without chilling the stove or range by admitting air through the eyes thereof. A further advantage gained is the fact that these doors, whenin their lowered position,

IOO

form an arch, the inner surfaces of which are at such an angle as to reflect the heat downward toward the stove orrange, thus further preventing a loss of heat by radiation.

My improvement may be applied to any stovepipe by a person having little or no skill and when in position may be readily manipulated without the possibility of causing the escape of gas within the room, which heretofore has been a constant danger in the regulation of coal-stoves, often attendant with serious results.

It is obvious that when the doors are swung downward andthe surrounding air permitted to iiow within the stovepipe a large percentage of the air within the room will be removed, and to this extent the device will act as a ventilator.

Of course my improvement may be made either of sheet metal or casting and of any size or design which may best suit the requirements or fancy of the manufacturer.

Having thus fully described my invention, what I claim as new and useful is- In a device of the character stated, a casing having its opposite sides respectively closed and opened, and independent doors adapted to cover and uncover the open sides, in combination with lugs on the inner faces of the closed sides of the casing forming common seats for the free ends of said doors when in closed position.

In testimony whereof I have hereunto affixed my signature in the presence of two sub scribing witnesses.

EARL V. COULSTON.

Witnesses:

DAVID SPRINGER, R. E. SPRINGER. 

